81089326 has 8 divisors (see below), whose sum is σ = 121719024. Its totient is φ = 40516320.

The previous prime is 81089317. The next prime is 81089347. The reversal of 81089326 is 62398018.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×81089326² = 13150957582268552, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10395 + ... + 16438.

It is an arithmetic number, because the mean of its divisors is an integer number (15214878).

Almost surely, 2^81089326 is an apocalyptic number.

81089326 is a deficient number, since it is larger than the sum of its proper divisors (40629698).

81089326 is a wasteful number, since it uses less digits than its factorization.

81089326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28346.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 81089326 is about 9004.9611881451. The cubic root of 81089326 is about 432.8338625200.

The spelling of 81089326 in words is "eighty-one million, eighty-nine thousand, three hundred twenty-six".